Anxiety may present as fear or worry, but can also make children irritable and angry. Anxiety symptoms can also include trouble sleeping, as well as physical symptoms like fatigue, headaches, or stomachaches. Some anxious children keep their worries to themselves and, thus, the symptoms can be missed.

Depression is a type of mood disorder. The main sign is when kids are sad, discouraged, or irritable for weeks, months, or even longer. Another sign a kid might have depression is negative thinking. This includes focusing on problems and faults, being mostly critical and self-critical, and complaining a lot.